Congress targets gig platforms with surprise payroll tax bill

What it does

This bill requires large businesses with at least $100 million in annual revenue and at least 10,000 independent contractors to withhold payroll taxes (Social Security and Medicare) on payments to those contractors, treating them like employees for tax purposes. Currently, independent contractors pay both the employer and employee portions of payroll taxes themselves; this bill shifts that burden to the large employer, effectively doubling the payroll tax rate applied to the employer while also including these amounts in Social Security earnings calculations.

Why we flagged it

The bill's core mechanism is a tax classification change: independent contractors at large firms are reclassified as wage-earners for payroll tax purposes, shifting withholding obligation and doubling the employer-side rate. This is a direct tax policy intervention, not a subsidy or deregulation.

What the text implies

• Employers may respond by reducing contractor headcount, shifting work to smaller firms (below $100M threshold), or reclassifying workers as true employees—each outcome changes the gig economy structure in ways not explicit in the bill.
• The doubled employer payroll tax rate (doubling both Social Security and Medicare portions under section 3111) creates a 15.3% employer-side tax on contractor payments, vs. the current 0% withholding obligation—a massive cost shock that may trigger contractor rate reductions or service cuts.

The full analysis lists 4 implications of this text.

Who stands to gain

Social Security Trust Fund (increased payroll tax revenue); Medicare Trust Fund (increased payroll tax revenue); Gig workers (via increased Social Security earnings credits, if employers do not reduce pay)